QuantEcon is dedicated to improving economic modeling by providing and enhancing open source computational tools for economists. QuantEcon offers code libraries useful for economics; workshops, seminars and training; and an online archive of lectures on economics and programming.

The Astropy Project provides software tools and infrastructure to facilitate research by professional astronomers. In addition to maintaining a core Python package, the Astropy Project supports the development of high-grade affiliated packages by members of the astronomical community.

The aim of the Econ-ARK project is to make it easier for social scientists to do ‘structural modeling’ of economic choice behavior by providing a well-documented, open source codebase containing the core techniques in a way that can be relatively easily adapted to address many different questions in both macro- and microeconomics.

yt is a tool for querying, analyzing and visualizing objects or regions of interest to identify emergent properties in data available in a variety of real-world research data formats. Initially developed for use by professional astronomers, yt can be applied in a variety of domains including astrophysics, seismology, nuclear engineering, molecular dynamics, and oceanography.